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264 lines
11 KiB
EmacsLisp
264 lines
11 KiB
EmacsLisp
;;; vietnamese.el --- Support for Vietnamese -*- coding: iso-2022-7bit; -*-
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;; Copyright (C) 1995 Electrotechnical Laboratory, JAPAN.
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;; Licensed to the Free Software Foundation.
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;; Keywords: multilingual, Vietnamese
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;; This file is part of GNU Emacs.
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;; GNU Emacs is free software; you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation; either version 2, or (at your option)
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;; any later version.
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;; GNU Emacs is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;; You should have received a copy of the GNU General Public License
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;; along with GNU Emacs; see the file COPYING. If not, write to the
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;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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;; Boston, MA 02111-1307, USA.
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;;; Commentary:
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;; For Vietnames, the character sets VISCII and VSCII are supported.
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;;; Code:
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(eval-and-compile
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(defvar viet-viscii-decode-table
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[;; VISCII is a full 8-bit code.
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0 1 ?,2F(B 3 4 ?,2G(B ?,2g(B 7 8 9 10 11 12 13 14 15
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16 17 18 19 ?,2V(B 21 22 23 24 ?,2[(B 26 27 28 29 ?,2\(B 31
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32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47
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48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63
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64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79
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80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95
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96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111
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112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127
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?,2U(B ?,2!(B ?,2"(B ?,2#(B ?,2$(B ?,2%(B ?,2&(B ?,2'(B ?,2((B ?,2)(B ?,2*(B ?,2+(B ?,2,(B ?,2-(B ?,2.(B ?,2/(B
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?,20(B ?,21(B ?,22(B ?,25(B ?,2~(B ?,2>(B ?,26(B ?,27(B ?,28(B ?,2v(B ?,2w(B ?,2o(B ?,2|(B ?,2{(B ?,2x(B ?,2O(B
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?,2u(B ?,1!(B ?,1"(B ?,1#(B ?,1$(B ?,1%(B ?,1&(B ?,1'(B ?,1((B ?,1)(B ?,1*(B ?,1+(B ?,1,(B ?,1-(B ?,1.(B ?,1/(B
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?,10(B ?,11(B ?,12(B ?,2^(B ?,2=(B ?,15(B ?,16(B ?,17(B ?,18(B ?,2q(B ?,2Q(B ?,2W(B ?,2X(B ?,1=(B ?,1>(B ?,2_(B
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?,2`(B ?,2a(B ?,2b(B ?,2c(B ?,2d(B ?,2e(B ?,1F(B ?,1G(B ?,2h(B ?,2i(B ?,2j(B ?,2k(B ?,2l(B ?,2m(B ?,2n(B ?,1O(B
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?,2p(B ?,1Q(B ?,2r(B ?,2s(B ?,2t(B ?,1U(B ?,1V(B ?,1W(B ?,1X(B ?,2y(B ?,2z(B ?,1[(B ?,1\(B ?,2}(B ?,1^(B ?,1_(B
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?,1`(B ?,1a(B ?,1b(B ?,1c(B ?,1d(B ?,1e(B ?,1f(B ?,1g(B ?,1h(B ?,1i(B ?,1j(B ?,1k(B ?,1l(B ?,1m(B ?,1n(B ?,1o(B
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?,1p(B ?,1q(B ?,1r(B ?,1s(B ?,1t(B ?,1u(B ?,1v(B ?,1w(B ?,1x(B ?,1y(B ?,1z(B ?,1{(B ?,1|(B ?,1}(B ?,1~(B ?,2f(B ]
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"Vietnamese VISCII decoding table.")
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(defvar viet-viscii-encode-table
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(let ((table-lower (make-vector 128 0))
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(table-upper (make-vector 128 0))
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(i 0)
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char-component)
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(while (< i 256)
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(setq char-component (split-char (aref viet-viscii-decode-table i)))
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(cond ((eq (car char-component) 'vietnamese-viscii-lower)
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(aset table-lower (nth 1 char-component) i))
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((eq (car char-component) 'vietnamese-viscii-upper)
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(aset table-upper (nth 1 char-component) i)))
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(setq i (1+ i)))
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(cons table-lower table-upper))
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"Vietnamese VISCII encoding table.
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Cons of tables for encoding lower-case chars and upper-case characters.
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Both tables are indexed by the position code of Vietnamese characters.")
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(defvar viet-vscii-decode-table
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[;; VSCII is a full 8-bit code.
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0 ?,2z(B ?,2x(B 3 ?,2W(B ?,2X(B ?,2f(B 7 8 9 10 11 12 13 14 15
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16 ?,2Q(B ?,2_(B ?,2O(B ?,2V(B ?,2[(B ?,2}(B ?,2\(B 24 25 26 27 28 29 30 31
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32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47
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48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63
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64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79
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80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95
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96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111
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112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127
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?,2`(B ?,2d(B ?,2c(B ?,2a(B ?,2U(B ?,2#(B ?,2'(B ?,2h(B ?,2k(B ?,2((B ?,2i(B ?,2)(B ?,2.(B ?,2l(B ?,2o(B ?,2n(B
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?,2m(B ?,28(B ?,2r(B ?,2v(B ?,2u(B ?,2s(B ?,2w(B ?,25(B ?,26(B ?,27(B ?,2^(B ?,2>(B ?,2~(B ?,2y(B ?,2|(B ?,2{(B
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160 ?,2e(B ?,2b(B ?,2j(B ?,2t(B ?,2=(B ?,2_(B ?,2p(B ?,1e(B ?,1b(B ?,1j(B ?,1t(B ?,1>(B ?,1y(B ?,1p(B ?,2"(B
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192 193 194 195 196 ?,1`(B ?,1d(B ?,1c(B ?,1a(B ?,1U(B ?,2F(B ?,1"(B ?,1F(B ?,1G(B ?,1!(B ?,2G(B
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?,2!(B ?,2%(B ?,2&(B ?,2g(B ?,2%(B ?,2+(B ?,1#(B ?,1%(B ?,1&(B ?,1g(B ?,1$(B ?,1'(B ?,1h(B ?,2,(B ?,1k(B ?,1((B
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?,1i(B ?,1)(B ?,1+(B ?,1,(B ?,1-(B ?,1*(B ?,1.(B ?,1l(B ?,1o(B ?,2-(B ?,2*(B ?,20(B ?,1n(B ?,1m(B ?,18(B ?,1r(B
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?,21(B ?,1v(B ?,1u(B ?,1s(B ?,1w(B ?,10(B ?,11(B ?,12(B ?,1/(B ?,15(B ?,16(B ?,17(B ?,1^(B ?,1>(B ?,1~(B ?,1y(B
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?,22(B ?,1|(B ?,1{(B ?,1z(B ?,1x(B ?,1W(B ?,1X(B ?,1f(B ?,1Q(B ?,1q(B ?,1O(B ?,1V(B ?,1[(B ?,1}(B ?,1\(B ?,2/(B]
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"Vietnamese VSCII decoding table.")
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(defvar viet-vscii-encode-table
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(let ((table-lower (make-vector 128 0))
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(table-upper (make-vector 128 0))
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(i 0)
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char-component)
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(while (< i 256)
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(setq char-component (split-char (aref viet-vscii-decode-table i)))
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(cond ((eq (car char-component) 'vietnamese-viscii-lower)
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(aset table-lower (nth 1 char-component) i))
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((eq (car char-component) 'vietnamese-viscii-upper)
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(aset table-upper (nth 1 char-component) i)))
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(setq i (1+ i)))
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(cons table-lower table-upper))
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"Vietnamese VSCII encoding table.
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Cons of tables for encoding lower-case chars and upper-case characters.
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Both tables are indexed by the position code of Vietnamese characters.")
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)
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(define-ccl-program ccl-decode-viscii
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`(3
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((read r0)
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(loop
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(write-read-repeat r0 ,viet-viscii-decode-table))
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))
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"CCL program to decode VISCII 1.1")
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;; Multibyte form of a Vietnamese character is as follows (3-byte):
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;; LEADING-CODE-PRIVATE-11 LEADING-CODE-EXTENDED-11 POSITION-CODE
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;; where LEADING-CODE-EXTENDED-11 for Vietnamese is
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;; `vietnamese-viscii-lower' or `vietnamese-viscii-upper'.
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(define-ccl-program ccl-encode-viscii
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`(1
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((read r0)
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(loop
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(if (r0 < 128)
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;; ASCII
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(write-read-repeat r0)
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;; not ASCII
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(if (r0 != ,leading-code-private-11)
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;; not Vietnamese
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(write-read-repeat r0)
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((read-if (r0 == ,(charset-id 'vietnamese-viscii-lower))
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(;; Vietnamese lower
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(read r0)
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(r0 -= 128)
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(write-read-repeat r0 ,(car viet-viscii-encode-table)))
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(if (r0 == ,(charset-id 'vietnamese-viscii-upper))
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(;; Vietnamese upper
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(read r0)
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(r0 -= 128)
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(write-read-repeat r0 ,(cdr viet-viscii-encode-table)))
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;; not Vietnamese
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(write-read-repeat r0)))))))))
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"CCL program to encode VISCII 1.1")
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(define-ccl-program ccl-encode-viscii-font
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`(0
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;; In: R0:vietnamese-viscii-lower/vietnamese-viscii-upper
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;; R1:position code
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;; Out: R1:font code point
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(if (r0 == ,(charset-id 'vietnamese-viscii-lower))
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(r1 = r1 ,(car viet-viscii-encode-table))
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(r1 = r1 ,(cdr viet-viscii-encode-table)))
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)
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"CCL program to encode Vietnamese chars to VISCII 1.1 font")
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(define-ccl-program ccl-decode-vscii
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`(3
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((read r0)
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(loop
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(write-read-repeat r0 ,viet-vscii-decode-table))
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))
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"CCL program to decode VSCII-1.")
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(define-ccl-program ccl-encode-vscii
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`(1
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((read r0)
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(loop
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(if (r0 < 128)
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;; ASCII
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(write-read-repeat r0)
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;; not ASCII
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(if (r0 != ,leading-code-private-11)
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;; not Vietnamese
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(write-read-repeat r0)
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(read-if (r0 == ,(charset-id 'vietnamese-viscii-lower))
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(;; Vietnamese lower
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(read r0)
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(r0 -= 128)
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(write-read-repeat r0 ,(car viet-vscii-encode-table)))
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(if (r0 == ,(charset-id 'vietnamese-viscii-upper))
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(;; Vietnamese upper
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(read r0)
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(r0 -= 128)
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(write-read-repeat r0 ,(cdr viet-viscii-encode-table)))
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;; not Vietnamese
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(write-read-repeat r0))))))))
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"CCL program to encode VSCII-1.")
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(define-ccl-program ccl-encode-vscii-font
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`(0
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;; In: R0:vietnamese-viscii-lower/vietnamese-viscii-upper
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;; R1:position code
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;; Out: R1:font code point
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(if (r0 == ,(charset-id 'vietnamese-viscii-lower))
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(r1 = r1 ,(car viet-vscii-encode-table))
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(r1 = r1 ,(cdr viet-vscii-encode-table)))
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)
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"CCL program to encode Vietnamese chars to VSCII-1 font.")
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(make-coding-system
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'vietnamese-viscii 4 ?V
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"8-bit encoding for Vietnamese VISCII 1.1 (MIME:VISCII)"
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'(ccl-decode-viscii . ccl-encode-viscii)
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'((safe-charsets ascii vietnamese-viscii-lower vietnamese-viscii-upper)
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(mime-charset . viscii)
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(valid-codes (0 . 255))))
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(define-coding-system-alias 'viscii 'vietnamese-viscii)
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(make-coding-system
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'vietnamese-vscii 4 ?v
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"8-bit encoding for Vietnamese VSCII-1"
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'(ccl-decode-vscii . ccl-encode-vscii)
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'((safe-charsets ascii vietnamese-viscii-lower vietnamese-viscii-upper)
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(valid-codes (0 . 255))))
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(define-coding-system-alias 'vscii 'vietnamese-vscii)
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(make-coding-system
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'vietnamese-viqr 0 ?q
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"Vietnamese latin transcription (VIQR)"
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nil
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'((safe-charsets ascii vietnamese-viscii-lower vietnamese-viscii-upper)
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(post-read-conversion . viqr-post-read-conversion)
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(pre-write-conversion . viqr-pre-write-conversion)))
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(define-coding-system-alias 'viqr 'vietnamese-viqr)
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(setq font-ccl-encoder-alist
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(cons (cons "viscii" ccl-encode-viscii-font) font-ccl-encoder-alist))
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(setq font-ccl-encoder-alist
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(cons (cons "vscii" ccl-encode-vscii-font) font-ccl-encoder-alist))
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(defvar viet-viscii-nonascii-translation-table
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(make-translation-table-from-vector viet-viscii-decode-table)
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"Value of `nonascii-translation-table' in Vietnamese language environment.")
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(set-language-info-alist
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"Vietnamese" `((charset vietnamese-viscii-lower vietnamese-viscii-upper)
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(nonascii-translation
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. ,viet-viscii-nonascii-translation-table)
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(charset-origin-alist
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(vietnamese-viscii-lower "VISCII" viet-encode-viscii-char)
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(vietnamese-viscii-upper "VISCII" viet-encode-viscii-char))
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(coding-system vietnamese-viscii vietnamese-vscii
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vietnamese-viqr)
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(coding-priority vietnamese-viscii)
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(input-method . "vietnamese-viqr")
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(unibyte-display . vietnamese-viscii)
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(features viet-util)
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(sample-text . "Vietnamese (Ti,1*(Bng Vi,1.(Bt) Ch,1`(Bo b,1U(Bn")
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(documentation . "\
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For Vietnamese, Emacs uses special charasets internally.
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They can be decoded from and encoded to VISCC, VSCII, and VIQR.
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Current setting put higher priority to the coding system VISCII than VSCII.
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If you prefer VSCII, please do: (prefer-coding-system 'vietnamese-vscii)")
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))
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;;; vietnamese.el ends here
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